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belka [17]
2 years ago
8

Develop an EER model for the following situation using the traditional EER notation, the Visio notation, or the subtypes inside

supertypes notation, as specified by your instructor: An international school of technology has hired you to create a database management system to assist in scheduling classes. After several interviews with the president, you have come up with the following list of entities, attributes, and initial business rules:

Computers and Technology
1 answer:
podryga [215]2 years ago
3 0

Answer:

Explanation:

To develop the model for Creating the supertype/subtype relationship three diffrent types of notation is given bellow accrdig to the diagram attached.

1.Traditional EER (Enhance Entity-Relational) notation

2.Microsoft Visio notation

3.Subtypes Inside supertype note

<em><u>Traditional EER(Enhance Entity-Relational)notation for the international school of technology diagram is attached bellow</u></em>

The diagram consist of the following entity

Room Supertype

Media Entity Type

COURSE entity type

Section weak entity type

Schedule associatiative entity type

<u><em>Microsoft Visio Notation for the international school of technology  is ashown in the diagram bellow.</em></u>

The diagram consist of the following entity

Room Supertype

Media Entity Type

Computer entity type

Instructor entity type

Time slot entity type

<u><em>Subtype Inside Supertype note Notation for the international school of technology  is shown in the diagram bellow.</em></u>

The diagram consist of the following entity

Room Supertype

Media Entity Type

Computer entity type

Instructor entity type

Time slot entity type

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Answer:

//Here is code in java.

import java.util.*;

class Main

{

public static void main (String[] args) throws java.lang.Exception

{

   try{

       int in;

     //scanner class object to read the input

    Scanner scr=new Scanner(System.in);

     // variable to keep running total

    int total=0;

    System.out.println("please enter an Integer:");

     // read the input first time

    in=scr.nextInt();

    System.out.print("individual digits of "+in+" is ");

    if(in<0)

    {

        in=-(in);

    }

   

 

     //call the function to print the digits of number

   print_dig(in);

   System.out.println();

    //calculate the sum of all digits

   do{

       int r=in%10;

       total=total+r;

       in=in/10;

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}

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public static void print_dig(int num)

{  

    if(num==0)

    return;

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    {

    print_dig(num/10);

    System.out.print(num%10+" ");

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}

Explanation:

Read a number with the help of object of scanner class.if the input is negative

then make it positive number before calling the function print_dig().call

the recursive method print_dig() with parameter "num".It will extract the digits

of the number and print then in the order. Then in the main method, calculate

sum of all the digits of number.

Output:

please enter an Integer:                                                                                                  

3456                                                                                                                      

individual digits of 3456 is 3 4 5 6                                                                                      

total of digits is: 18

please enter an Integer:                                                                                                  

-2345                                                                                                                      

individual digits of -2345 is 2 3 4 5                                                                                      

total of digits is: 14

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Answer:

Following are the code to this question:

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   return guest2#return guest2 dictionary values

Rory_guest= { "Ada":2, "Ben":3, "Dav":1, "Jo":3, "Charry":2, "Terry":1, "bob":4}#defining a dictionary and add value

Taylor_guest = { "Dav":4, "Nan":1, "bobert":2, "Ada":1, "Samantha":3, "Chr":5}#defining a dictionary and add value

print(combine_guest(Rory_guest,Taylor_guest))#calling the combine_guest method

Output:

{'Nan': 1, 'Samantha': 3, 'Ada': 2, 'bob': 4, 'Terry': 1, 'Jo': 3, 'Ben': 3, 'Dav': 1, 'Charry': 2, 'bobert': 2, 'Chr': 5}

Explanation:

In the code a method, "combine_guest" is defined, that accepts two dictionaries "guest1, guest2" inside the method, in which the "guest2" dictionary uses the update method to combine the value of the guest1 dictionary and use a return keyword to return guest2 values.

In the next step, two dictionaries are declared, that holds some values and use a print method to call the "combine_guest" method and prints its return values.  

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